Slant range and direction detector

Slip indicating system for a four-wheel drive vehicle

Slope detector for indicating flat tires and the like

Snap switch alarm

Solid state railroad lights/gate controller

Solid state sequence logic circuit

Solid-state information display apparatus for automobile vehicle

Sonar apparatus

Sonic direction finder

Sonic motor

Spatially distributed transducer for towed line array applicatio

Speaker grille for streamlined light bar mounted on vehicle roof

Spectrally balanced chromatic landing approach lighting system

Speed alarm system for a motor vehicle

Speed alarm system for automotive vehicle

Speed detection system for automobiles and other motor-driven ob

Speed limit passing indicator

Speed monitoring and ticketing system for a motor vehicle

Speed reducing signal

Speed shift indicator